Ultra Portable Bluetooth Boombox Project - need some help

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I started this project a few days ago.
My old Panasonic boombox had seen better days to i striped out the old amp, cassette player and power supply. Then dremeled out the excess plastic and filled in all the holes and rear vents with bondo and painted.

I plan on replacing the speakers with some new full-range 4" car speakers powered by a Amp-6 Basic (41Hz.com). I want to integrate a Bluetooth receiver so I can stream music from my Android phone. I plan to power everything with a 12V sealed lead acid (probably in the 7-12 Ah range)

An externally hosted image should be here but it was not working when we last tested it.

old speakers, might re-paint

An externally hosted image should be here but it was not working when we last tested it.


An externally hosted image should be here but it was not working when we last tested it.


This is my question, I want to add a volume control between the Bluetooth output and the amp input. I salvaged a volume pot that is labeled "M 50KohmA 732M MAL". It has 6 pins for stereo and i connected up the left input, left output, ground, ground, right output, right input in that order. I soldered the grounds together and to the ground leads.

When everything is powered up, the volume pot causes a huge drop in audio volume and when I adjust the pot, I can hear no effect.

I have looked through the forum for how to correctly wire a volume pot, however I am almost electronically illiterate. Could someone give me a plane English explanation of what I need to do to make it work?

I will continue to upload pictures of my progress, thanks for looking
 
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